Significant architecture enhancement so deals with very large scenes well, modelling tools are best in class, progressive rendering engine is a time-saver, lots of animation and general tweaks, new particle engine allows for complex simulations quite easily.
Layered PSDs don’t incorporate into texturing workflow properly, rigging is poor, not a huge number of new features, general workflow is convoluted, shader tree is difficult to master, input control not the easiest, interface idiosyncratic
An interesting release. If you weren't convinced by modo before it's probably still not for you as it has its own style and way of doing things. For those interested primarily in modelling it's worth the time investment to get over the learning curve as 7...